Trowalizing

The trolling is also referred to as sliding grinding or sliding cutting and is a separating method of surface machining. In this case, metal workpieces together with a grinding means are usually introduced into a rotating drum in order to remove material in a targeted manner.
Trowalization is described in the DIN 8589 standard, together with the lapping and polishing, and is referred to as sliding panels. The process is very popular in the metal processing industry, as it can perform several tasks from Deburring and rounding over smoothing and polishing to matting and grinding. The desired result of the surface treatment can be brought about in a targeted manner by the variation of the machines and grinding means used.

Term clarification: Trowalisierung

The term trowalization goes back to Walther Trowal. Walther Trowal was the first company to use sliding grinding in a drum industrially. Therefore, it was also called “mmel-ther” by way of language, which established the concept of trolling in the industry. The term "trolling" was published on 6. December 1951 registered as a word mark at the German Patent and Trademark Office.

What is the role of tumbling?

Trorolling is used not only for deburring and rounding off edges, but can also be used for optical purposes, depending on the movement of the container, the nature of the bulk material and the type of compound. Overview of the most important applications of trowalization:

Which machines and additives are needed for tumbling?

The container must be designed during tro-rolling in such a way that it withstands the high loads of the rotating and oscillating movements. For this reason it is usually made of robust steel and is lined with polyurethane or a comparable material for noise protection reasons on the inside. In addition, the container must also be designed such that it withstands the loads of the liquid used.

What is the quality of the abrasives?

The shape and size of the bulk material used depend substantially on the technical and optical result to be achieved by the method. The diameter of the chips can be from one millimeter to eight centimeters and determines the intensity of the grinding process as well as the grinding image on the workpiece surface.

In order to determine the degree of material removal, the abrasive can be varied in its composition. Typically, ceramics or synthetic resin serve as the basic material for the chips. A certain amount of minerals is added to this basic material. The higher the content of minerals in the chips, the finer the surface of the workpieces is processed. Alternatively, abrasives of steel or plastic are also used.

Find companies for Trowalisierung

If you are looking for a Trowalisierung, Techpilot will find numerous companies. Techpilot, Europe's largest platform for contracting parts, offers a comprehensive industry directory for the manufacturing industry with more than 24,000 registered suppliers. As a rule, the contractors offer the complete production of your parts including post-treatments such as trolling.

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